Hello, we have Google Play OpenClosed reduced version, which allows us to sort our contacts in five categories, Family, Friends, Work, Blacklist and Whitelist. In the first three you can set a schedule for receiving calls, very helpful in establishing a work schedule. The black list of contacts will lock us staying there and instead whitelist will always have access.Also we block, (only for category JOB), Saturdays and Sundays, today, no calls. hidden. etc.The Lite version is limited to 20 phonebook contacts, but you can get an idea of ​​how it works.We appreciate your comments.Thank you.